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r <br /> • <br /> SAN JlJA /iJViJ+VRFS/A IMAS BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of +2.3 indicates that for January SAN JUAN/DOLORES/ANIMAS RIVER BASINS <br /> the basin water supplies were above normal. The Soil Surface MetK °°'Y l nanl History <br /> s <br /> Conservation Service reports January 138 percent of <br /> normal.Storage in McPhee,Vallecito,and Lemon reservoirs <br /> totaled 119%of normal on January 31. January brought a w 3 <br /> s <br /> significant impact to the San Juan Basin in terms of water 2 <br /> supply outlook. Heavy snow in Durango beginning the first ! <br /> week of the new year was augmented by rain in the <br /> Durango area which led to near record snow events early in g ° <br /> the month. By the 16th, Durango had experienced 10 -1 <br /> inches of precipitation in a 6 week period, accumulated 39 a <br /> inches of snow on the ground, a record, and had stressed _3 <br /> many local buildings and houses to the breaking point. <br /> Total snowfall during the month was 46 inches with 6.08 -' JAN94 JAN95 JAN 99 JAN90 JAN92 <br /> JAMS JAN57 JAN99 JAN91 JAN93 <br /> inches of water. The high month in January, 1980 MONTH/YEAR <br /> experienced 58.5 inches of snow with 6.94 inches of water. <br /> Mountain snow courses showed decreasing snow <br /> accumulations with elevation gain. The heavy snowpack REPRESENTATIVE RESERVOIRS <br /> years of 1979 and 1980 exceeded the 20 feet of water °°`° 5-ANIMAS 9M5lNs <br /> 320 <br /> measured on the La Plata Course. The Mancos snow course 300- <br /> was significantly less than that at 16 inches of water. 260 r <br /> Expectations are for a good lengthy season of runoff. 260 <br /> 24°- <br /> However, it is still too early to predict the streamflow = 220— <br /> 200- <br /> quantities with confidence. 1130_ <br /> li 160- <br /> Reservoir storage remains the same as last month St., 20 <br /> although some lower elevation reservoirs are higher than 2 100- <br /> usual. Navajo Dam may need to release water earlier this s°- <br /> 60- :.• 'N'N: <br /> spring. Red Mesa Ward Reservoir has filled enough that +° - : \\�\ <br /> further storage may not be required until runoff begins this 0- .... <br /> =MI <br /> spring. MCPFiee Val',Clio Lsmon <br /> ::Avg. 1/31 Contents M 1/31/93 Contents <br /> Winter snow recreation has been excellent in the <br /> area,with deep snow and warmer temperatures than usual. <br /> Releases below McPhee Reservoir are averaging 30 cfs while <br /> outlet repairs continue. <br /> With excellent snow and soil moisture conditions, REPRESENTATIVE RESERVOIRS <br /> the outlook is bright for a plentiful water supply this year. DOLORES-ANIMAS SINS <br /> 320 <br /> ELI <br /> F 220 - <br /> 4./p� 200- <br /> V <br /> rn 190- <br /> St 720- <br /> 1 1o0 <br /> 90- <br /> 20- <br /> 0 <br /> McPhee Val leelto LI80n <br /> __.:Avg. 1/31 Contents ®1/31/93 Contents <br /> • <br /> 9 • <br />